Gardner, Martin <br/><br/>
Further mathematical diversions 

 -  Penguin Group,  1969. 
 - 255p.  : ill.   ; 20cm.  
 - 	 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>LC Class. No.: </label>MATH QA37.2.G36